Umbrella hub



FIG. 1 is a perspective view of a umbrella hub in accordance with the new design;

FIG. 2 is a top view thereof;

FIG. 3 is a side elevational view thereof, with the umbrella hub being concentric about its longitudinal axis and the opposing side elevational view being a mirror image thereof; and,

FIG. 4 is a side elevational view of an umbrella incorporating the umbrella hub therein.

The broken lines in the figures are for illustrative purposes only and form no part of the claimed invention. 

The ornamental design for the umbrella hub, as shown and described. 